M. Night Shyamalan isn't the only one who wants us to think that's when dead people are around. I seem to remember the red haired guy from YU-YU Hakasho (I know his name but I'm not even going to think about spelling it.) had a similar power. He called it "the shiver" or something. But more to the point, yeah it happens to me all the time. I usually don't think twice about it, but sometimes I get this tingling sensation in my spine that won't go away until I let my body shake it off. Maybe it's a seizure? :-P

I get that being watched feeling often. It creeps me out. It happens a lot when im in the shower alone for some reason. Pervy ghosts perhaps?

I usually only get that feeling when I start wacking off. I haven't really had it at any other time.

I find it interesting that it's possible that someone who died still has the capacity to bother people. I should be so lucky.

I think just about everyone gets the feeling they're being watched sometimes. I know I sure do. I'll be walking somewhere, and have to turn around and make sure I'm not being watched.

Yeah. I've gotten that feeling before. It's just one of those things. I fully believe in the spiritual world and know that ghosts exist in all sorts of places. I've never gotten any bad vibes from any of the presences I've felt so I don't worry about it.